KR20110041387A - Method for transmitting/receiving messages to control rfid reader operation - Google Patents

Abstract

PURPOSE: A messaging transmission/reception method for RFID(Radio Frequency IDentification) reader operation control is provided to transmit and receive a message by a standardized protocol between the host and the RFID reader. CONSTITUTION: A host(100) transmits a command message to an RFID reader for the operation control(S110). The command message includes message length, a message identifier, and a working code. The host receives a response message corresponding to the command message from the RFID reader(S120). The response message includes message length, a message identifier, a working code, and a response code.

Description

Message Transmitting and Receiving Method for Radio Frequency Recognition Reader Operation Control {METHOD FOR TRANSMITTING / RECEIVING MESSAGES TO CONTROL RFID READER OPERATION}

The present invention relates to a radio frequency identification system, and more particularly, to a message transmission and reception method for operation control of a radio frequency identification reader.

Radio Frequency IDentification (hereinafter referred to as 'RFID') technology refers to a technology for recognizing information using radio waves. RFID systems using this RFID technology include hosts, RFID readers, and RFID tags.

The host is a device for processing information and may be, for example, a computer. The RFID reader is connected to a host to process data collected from the RFID tag. The RFID tag records or reads data therein by a control signal received from the RFID reader and transmits the data to the RFID reader.

The host transmits and receives a message through a protocol established between the host and the RFID reader to control the operation of the RFID reader. However, RFID readers can use different protocols from the host, depending on the manufacturer and type. If the host is to control the RFID reader using a variety of protocols, it is necessary to perform a separate configuration operation for a specific RFID reader only, or additionally include an adapter for supporting control of the corresponding RFID reader.

An object of the present invention is to provide a message transmission and reception method for the operation control of the radio frequency identification reader.

Another object of the present invention is to provide a message transmission / reception method for operation control of radio frequency readers using various protocols.

Message transmitting and receiving method for the operation control of the radio frequency identification reader according to the present invention comprises the steps of transmitting a command message including a message length, a message identifier, a work code for the operation control from the host to the RFID reader, and the In response to the command message, receiving a response message including a message length, a message identifier, a work code, and a response code from an RFID reader, wherein each of the command message and the response message selects a payload according to the work code. It characterized by including as.

According to the present invention, it is possible to control the operation of the RF reader by the host by proposing a message transmission and reception by the standard protocol between the RF reader and the host. In addition, it is possible to control the operation of a plurality of radio frequency identification readers to which different protocols are applied through message transmission and reception using the proposed protocol.

1 exemplarily shows a structure of a radio frequency identification system of the present invention;
2 is a diagram illustrating a plurality of RFID readers connected to a host of FIG. 1;
3 is a diagram illustrating a structure of a host illustrated in FIG. 1.
4 is a signal flow diagram illustrating a message transmission and reception procedure between a host and an RFID reader shown in FIG. 1;
5 is a diagram illustrating a structure of an RFID reader and a host for transmitting and receiving a message proposed in the present invention;
6 illustrates a command message structure according to an embodiment of the present invention;
7 is a diagram illustrating a response message structure according to an embodiment of the present invention;
8 illustrates an inventory command message and an inventory response message according to an embodiment of the present invention;
9 illustrates a read command message and a read response message according to an embodiment of the present invention;
10 illustrates a write command message and a write response message according to an embodiment of the present invention;
11 is a view illustrating a disabled command message and a disabled response message according to an embodiment of the present invention;
12 illustrates a lock command message and a lock response message according to an embodiment of the present invention;
13 illustrates an inquiry command message, a setup command message, an extended command message, an inquiry response message, a setting response message, and an extended response message according to an embodiment of the present invention;
14 illustrates an inquiry command message, an inquiry response message, a setting command message, and a setting response message for antenna activation according to an embodiment of the present invention;
15 illustrates an inquiry command message, an inquiry response message, a setting command message, and a setting response message for activating a notification message according to an embodiment of the present invention;
16 illustrates an inquiry command message, an inquiry response message, a setting command message, and a setting response message for setting notification data according to an embodiment of the present invention;
17 illustrates an inquiry command message, an inquiry response message, a setting command message, and a setting response message for controlling antenna transmission power of an RFID reader according to an embodiment of the present invention;
18 illustrates an inquiry command message, an inquiry response message, a setting command message, and a setting response message for identifying a plurality of RFID tags according to an embodiment of the present invention;
FIG. 19 is a diagram illustrating an inquiry command message, an inquiry response message, a setting command message, and a setting response message for setting a window size according to an embodiment of the present invention; FIG.
20 illustrates a notification message according to an embodiment of the present invention;
21 is a signal flow diagram illustrating an example procedure of transmitting and receiving an inquiry message and a setting message between a host and an RFID tag shown in FIG. 1;
FIG. 22 is a signal flowchart illustrating a message transmission and reception procedure between an RFID reader and an RFID tag illustrated in FIG. 1.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to distract from the gist of the present invention.

The present invention provides a method for transmitting and receiving a message for controlling the operation of an RFID reader in a radio frequency identification (hereinafter referred to as "RFID") system.

1 is a diagram illustrating an RFID system according to an embodiment of the present invention.

Referring to FIG. 1, an RFID system includes a host 100, an RFID reader 200, and an RFID tag 300.

The host 100 processes the information of the RFID reader 200. The host 100 includes, for example, a computer.

The RFID reader 200 is connected to the host 100 to process data collected from the RFID tag 300. The RFID reader 200 transmits a signal of a constant frequency to the RFID tag.

The RFID tag 300 is activated by receiving power, that is, a voltage, through the reception of a signal of a constant frequency from the RFID reader 200. Alternatively, the RFID tag 300 may operate by including its own power supply.

In the present invention, the host 100 transmits and receives a message for controlling the operation of the RFID reader 200 or setting a function. The present invention proposes a message that can be used universally between the host 100 and the RFID reader 200.

Using the message proposed in the present invention can facilitate the control of the RFID reader 200.

FIG. 2 is a diagram illustrating a plurality of RFID readers connected to the host of FIG. 1.

Referring to FIG. 2, the host 100 may control RFID readers 200, 210, and 220 using different protocols.

The RFID readers 200, 210, and 220 may have protocols having various characteristics according to manufacturers or types.

According to the application of the protocol having various characteristics, the host communicating with the RFID readers should use the adapters 21a, 21b, and 21c that support communication according to the protocol of each RFID reader.

The present invention proposes a command message transmitted from the host 100 to the RFID readers 200, 210, and 220 and a response message transmitted from the RFID readers 200, 210, and 220 to the host 100. In addition, a notification message, which is one of response messages transmitted from the RFID readers 200, 210, and 220 to the host 100, is further proposed. By using the proposed messages, the host 100 of the present invention can provide one standardized interface 20a, 20b, 20c to RFID readers 200, 210, and 220 using different protocols.

3 illustrates a structure of a host connected to an RFID reader for transmitting and receiving a message proposed in the present invention, and FIG. 4 illustrates a procedure for transmitting and receiving messages proposed in the present invention. Figure 5 below describes the structure of the host and the RFID reader for transmitting and receiving messages proposed in the present invention.

6, 7, 20 will be described each of the command message, response message, notification message proposed in the present invention. 8A to 19B also describe command messages and response messages transmitted and received between the host and the RFID reader.

FIG. 3 is a diagram illustrating a structure of a host illustrated in FIG. 1.

Referring to FIG. 3, the host 100 may include a host interface 110 for connecting to an RFID reader.

The host interface 110 includes a memory 111, an RFID reader connector 112, and an RFID reader controller 113.

The memory 111 stores information on the RFID reader (for example, RFID reader identification information, protocol (or message) information supported by the RFID reader, setting information for setting the RFID reader, etc.).

The RFID reader connection unit 112 recognizes the RFID reader 200 to be connected to the host 100. The RFID reader connection unit 112 searches for the information of the corresponding RFID reader 200 among the information of the RFID reader stored in the memory 111. The RFID reader connection unit 112 recognizes the RFID reader 200 through information retrieval. The RFID reader connection unit 112 may record an identifier, an interworking time, manager information, and the like of the interworking RFID reader 200 in the memory 111.

The RFID reader connection unit 112 initially sets the operation of the RFID reader 200 by using the recognized configuration information of the RFID reader 200. The RFID reader connection unit 112 notifies the RFID reader controller 113 of a communication connection state with the RFID reader 200.

The RFID reader controller 113 controls the operation of the RFID reader 200 through a message supported by the protocol of the RFID reader 200. The RFID reader 200 capable of transmitting and receiving a command message and a response message according to the protocol proposed in the present invention may operate under the control of the RFID reader controller 113. Therefore, the RFID reader 200 assumes that a protocol supporting the message proposed in the present invention is applied.

In addition, the communication connection between the host 100 and the RFID reader 200 of the present invention is, for example, a transfer control protocol (TCP), a hyper text transfer protocol (HTTP), a remote method call. Remote Method Invocation (RMI) may be used.

4 is a signal flowchart illustrating a message transmission and reception procedure between a host and an RFID reader shown in FIG. 1.

Referring to FIG. 4, the host 100 transmits a command message to the RFID reader 200 (operation S110). The host 100 may control the operation of the RFID reader 200 through a command message.

The RFID reader 200 transmits a response message corresponding to the command message to the host (S120). The RFID reader 200 may generate a response message using the information obtained from the RFID tag 300. The command message and the response message may be distinguished by the same message identifier and the work code. The command message and the response message form a pair corresponding to each other.

The RFID reader 200 transmits a notification message to the host 100 (step S130). The notification message may be classified as one of the response messages. Here, the notification message is transmitted to the host 100 at every message transmission period set in the RFID reader device. The notification message may be continuously sent to the host 100 until it is deactivated by the host 100.

5 is a diagram exemplarily illustrating a structure of a host and an RFID reader for transmitting and receiving a message proposed in the present invention.

Referring to FIG. 5, the host 100 includes a host transmitter 101 and a host receiver 102. The RFID reader 200 is included in the reader receiver 201 and the reader transmitter 202.

The host transmitter 101 transmits a message of the host 100. The message transmitted here may be, for example, a command message.

The host receiver 102 receives a message from the RFID reader 200. The message received here may be, for example, a response message or a notification message.

The reader receiver 201 receives a message from the host 100. The message transmitted here may be, for example, a command message. The RFID reader 200 may be controlled through a reader message received through the reader receiver 101.

The reader transmitter 202 transmits a message of the RFID reader 200. The message transmitted here may be a response message or a notification message.

The host transmitter 101 and the host receiver 102 may be included in the host interface 110 of FIG. 3.

6 is a diagram illustrating a command message structure according to an embodiment of the present invention.

Referring to FIG. 6, a command message includes a message length, a message identifier, a message code, an operation code, and a payload.

The message length is information indicating the length of the entire command message. The message length represents the length of the entire command message as a value in bytes. For example, if the information included in the message length is '4', it means that the length of the entire command message is 4 bytes.

The message identifier is identification information for identifying a message. The message identifier corresponds to a serial number corresponding to each command message. In addition, the message identifier is information for distinguishing the response message reception corresponding to the command message. In one example, the message identifier is represented by an integer value starting from '1'.

The work code is information for distinguishing a message type transmitted and received from the RFID reader. The working code will be described in detail in Table 1 below.

Payload is information including data (or parameters) added to a message according to a work code. The payload contains data of various shapes or lengths depending on the work code. The payload may or may not be included in the command message depending on the type of work code.

7 is a diagram illustrating a response message structure according to an embodiment of the present invention.

Referring to FIG. 7, the response message includes a message length, a message identifier, a work code, a response code, and a payload.

The message length is information indicating the length of the entire response message. The message length expresses the length of the entire response message as a natural number in bytes.

The message identifier is information for indicating a response message corresponding to the command message. The message identifier corresponds to a serial number corresponding to each response message. Therefore, the response message corresponding to the command message has the same identifier as the command message. In one example, the message identifier is expressed as a natural number starting from '1'. Meanwhile, the message identifier of the notification message, which is one of the response messages, may be expressed as '0'.

The job code is information for identifying a type of job for the host to control the operation of the RFID reader.

The working code will be described in detail in Table 1 below.

The response code is information indicating the result of processing the RFID reader for each command message. The response code is information indicating an operation result according to the request of the command message. The response code will be described in detail in Table 2 below.

Payload is information including data (or parameters) added to a message according to a work code. The payload contains various types of data depending on the work code. The payload may or may not be included in the response message depending on the type of work code.

The working code is shown in Table 1 below.

Operation Code
(Hex, ASCII) division Explanation necessary/
Selection (0x49, 'I') Inventory Command and response messages that identify tags around a reader and collect their UIIs necessary (0x52, 'R') Read Command and response messages for reading specific area data in tag memory necessary (0x57, 'W') Write Command and response messages to write data to specific areas of tag memory necessary (0x4B, 'K') Kill Command and response messages to disable functionality to prevent data collection from tags necessary (0x4C, 'L') Lock Command and response messages to change or prevent changes to data in specific areas of tag memory necessary (0x47, 'G') Get Command and response message to inquire setting value of reader in relation to tag memory control Selection (0x53, 'S') Set Command and response message to set the setting value of the reader in relation to the tag memory control Selection (0x43, 'C') Custom Command and response messages expandable by reader manufacturer Selection (0x4E, 'N') Notification Response message generated by the reader device by setting the notification message to the reader device Selection

In Table 1, the working code, for example, represents a hexadecimal value for ASCII code in one byte. Task Codes include Inventory, Read, Write, Disable, Kill, Lock, Get, Set, Custom, and Notification. do.

The inventory job code is '0x49', the ASCII code value of the alphabet 'I'. The inventory work code is included in the command message or response message to identify the RFID tag around the RFID reader and to collect a unique item identifier (hereinafter referred to as 'UII') of the identified RFID tag. Information.

The read operation code is '0x52', the ASCII code value of the alphabet 'R'. The read operation code is information included in a command message or a response message for reading data of a specific area from the RFID tag memory.

The write operation code is '0x57', the ASCII code value of the alphabet 'W'. The write operation code is information included in a command message or a response message for writing data in a specific area of the RFID tag memory.

The kill job code is the ASCII code value of the alphabet 'K', '0x4B'. The kill work code is information included in the command message or response message for disabling the function so that data collection from the RFID tag is impossible.

The lock operation code is '0x4C', the ASCII code value of the alphabet 'L'. The lock operation code is information included in a command message or a response message for changing or not changing data recorded in a specific area of the RFID tag memory.

The get operation code is '0x47', the ASCII code value of the alphabet 'G'. The get job code is information included in a command message or a response message for inquiring a set value of an RFID reader related to control of an RFID tag.

The set work code is '0x53', the ASCII code value of the alphabet 'S'. A set work code is information included in a command message or a response message for setting a set value of an RFID reader related to control of an RFID tag.

The custom work code is '0x53', the ASCII code value of the alphabet 'S'. Custom work code is information included in a command message or a response message for expansion according to the manufacturer of the RFID reader.

The notification work code is '0x4E', the ASCII code value of the letter 'N'. A notification work code is information included in a response message generated by the RFID reader device by setting a notification message for the RFID reader.

In addition, among the work codes, Inventory, Read, Write, Disable, and Lock are essential work codes, and Get, Set, and Custom are required. , And Notification are optional work codes. The message including the operation code of the notification is a response message, and has a function of collecting data of the UII or a specific memory area from the RFID tag within the recognition range according to the setting of the RFID reader and providing it to the host.

Response codes are shown in Table 2 below.

Response Code (Hexadecimal) division Explanation 0x00 Success If the control command was successful without error 0x01 NotSupportedOperation If the RFID reader device does not support the command 0x02 UndefinedOperation Error for Undefined Operation Code Value 0x03 InvalidField The field included in the command message contains an error or does not meet the range of values defined in this standard. 0x11 NoTagFound When no RFID tag is found in the range of the RFID reader 0x12 UiiNotFound For Read, Write, Kill, and Lock commands, if no RFID tag with the specified UII value is found 0x21 DataLocked When the Read or Write command has restricted access to the data in the area 0x22 InvalidPassword For Read, Write, Kill, and Lock commands, if the specified password is invalid 0x23 DataNotRead In case of reading the corresponding RFID tag but failed to read the data for the Read command. 0x24 DataNotWritten When a corresponding RFID tag is found for a write command but failed to write data 0x25 Lockfailed When the lock command fails to change the data lock state for a specific data area of the RFID tag. 0x26 Killfailed If the Kill command fails to stop the function of the RFID tag 0x30 DeviceError If any error occurs from the RFID reader device 0x40 UnknownError If any other undefined error occurs 0xFF Custom Response to commands that can be extended depending on the manufacturer of the reader 0x04-0x0F,
0x13-0x1F,
0x27-0x2F,
0x31-0x3F,
0x41-0xFE Reserved Unspecified Response Code

In Table 2, the response code, for example, expresses the hexadecimal value for the ASCII code in 1 byte as in the manner of expressing the working code. The response code is: Success, Unsupported Operation (UnsupportedOperation), Undefined Operation (UndefinedOperation), Success, Unsupported Operation (NotSupportedOperation), Undefined Operation (UndefinedOperation), Not Allowed Field ( InvalidField), tag not found (NoTagFound), UII not found (UIINotFound), data locked (DataLocked), not allowed password (InvalidPassword), data read failed (DataNotRead), data write failed (DataNotWritten), lock failed ( LockFailed, KillFailed, DeviceError, Unknown Error, Custom, and Reserved.

Success is the ASCII code value '0x00'. Success indicates that the control command from the host was successfully executed without error.

The not supported operation (NotSupportedOperation) is an ASCII code value of '0x01'. NotSupportedOperation indicates that the RFID reader does not support command messages.

UndefinedOperation is ASCII code value '0x02'. UndefinedOperation indicates an error for undefined operation code.

InvalidField is an ASCII code value of '0x03'. InvalidField indicates that the field included in the command message contains an error or does not meet the defined range of values.

The tag not found (NoTagFound) is an ASCII code value of '0x11'. NoTagFound indicates that the RFID tag is not found within the RFID reader's recognition range.

UII not found (UIINotFound) is an ASCII code value of '0x12'. UIINotFound indicates that no RFID tag with the specified UII value was found for a command message with an action code of Read, Write, Kill, or Lock. .

DataLocked is ASCII code value '0x21'. DataLocked refers to a case where access restriction is applied to data in a corresponding area for a command message having a work code of read or write.

InvalidPassword is ASCII code value '0x22'. InvalidPassword indicates that the password specified for a command message with an action code of Read, Write, Disable, or Lock is invalid.

The data read failure (DataNotRead) is an ASCII code value of '0x23'. The data read failure (DataNotRead) indicates that a corresponding RFID tag was found for a command message having an operation code of read, but failed to read data.

The data write failure (DataNotWritten) is an ASCII code value of '0x24'. The data write failure (DataNotWritten) indicates that a corresponding RFID tag was found for a command message having a write code of write but failed to write data.

LockFailed is an ASCII code value of '0x25'. LockFailed indicates a failure of a data lock state change for a specific data area of a corresponding RFID tag for a command message having a lock operation code.

KillFailed is an ASCII code value of '0x26'. KillFailed indicates the failure of a particular function stop of the RFID tag for a command message with a kill work code.

DeviceError is ASCII code value '0x30'. Device Error indicates that an error occurs from the RFID reader device.

Unknown error is ASCII code value '0x40'. Unknown error indicates that any other undefined error has occurred.

Custom is ASCII code value '0xFF'. Custom represents a response to a command that is extensible depending on the manufacturer making the RFID reader.

Reserved is '0x04' through '0x0F', or '0x13' through '0x1F', or '0x27' through '0x2F', or '0x31' through '0x3F', or '0x41' through '0x4F'. It is represented by the corresponding value. Reserved indicates an unspecified response code.

Next, the structure of the command message and the response message including each operation code of Table 1 will be described with reference to FIGS. 8A to 19D. In the following, the command message is a message sent from the host to the RFID reader, and the response message is a message sent from the RFID reader to the host.

8A illustrates an inventory command message according to an embodiment of the present invention.

Referring to FIG. 8A, the inventory command message includes a message length, a message identifier, and an operation code. For example, the message length may represent a value in two bytes, the message identifier may represent a value in two bytes, and the work code may represent a value in one byte.

The inventory command message is a command message for identifying the RFID tag around the RFID reader and collecting the UII of the identified RFID tag.

The message length is information indicating the length of the entire inventory command message. For example, when the total message length of the inventory command message is 5 bytes, the message length has a value of 5. If this value is expressed in 2-byte hexadecimal format, it is represented as '0x0005'.

The message identifier is identifier information for identifying the inventory command message. The message identifier is a natural value of one or more. For example, if the message identifier is 1, this value is expressed as '0x0001' when expressed in 2-byte hexadecimal format.

The job code is information indicating the inventory operation. The working code is represented as '0x49' when the ASCII code value corresponding to 'I', which is an abbreviation of Inventory, is expressed in hexadecimal format.

Thus, for example, an inventory command message having a value of '1' as a message identifier is expressed as '0x0005000149' when expressed in hexadecimal format of a total of 5 bytes.

8B illustrates an inventory response message according to an embodiment of the present invention.

Referring to FIG. 8B, the inventory response message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload. For example, the message length can represent a value in two bytes, the message identifier can represent a value in two bytes, the work code can represent a value in one byte, and the response code can represent a value in one byte. The payload may have a variable length.

The inventory response message is a response message according to performing an operation corresponding to the inventory command message. The inventory response message is a message for transmitting information (for example, the UII of the found RFID tag) about the RFID tag searched by the RFID reader to the host.

The message length is information indicating the length of the entire inventory response message. The message length may represent a byte value in hexadecimal format.

The message identifier is identifier information for identifying the inventory response message. The message identifier is a natural value of 1 or more and can be expressed in two-byte hexadecimal format. For example, the message identifier of the inventory response message may be represented by the same value as the message identifier of the inventory command message.

The work code is information for indicating that the RFID code is a control message for inventory operation in the RFID reader. The work code may be represented by an ASCII code value '0x49' corresponding to 'I', which is an abbreviation of 'Inventory'.

The response code is information indicating an operation result according to the inventory operation request of the inventory command message.

In addition, the payload includes a tag count and a UII set. For example, the tag count may represent a value in two bytes, and the UII set may represent a value in various bytes (n being 0 to arbitrary integers) according to the included information. The payload includes a set of integer UIIs corresponding to tag count values. For example, when the value of the tag count is 0, the total payload may be expressed as '0x0000', which means that there are 0 RFID tags searched by the RFID reader and information about the UII set in the payload of the inventory response message. Is not included.

The tag count is information on the total number of tags recognized by the RFID reader according to the inventory command message.

The UII set is UII information corresponding to the number of tags of a tag count.

The UII set includes an antenna ID, an UII header length, a UII header, a UII length, and a UII. For example, the antenna identifier may represent a value in one byte, the UII header length may represent a value in one byte, and the UII header may represent a value in various bytes (0-n). In addition, the UII length may represent a value in one byte, and the UII may represent a value in various bytes (0-n).

The antenna identifier is identifier information of the antenna that recognizes the RFID tag in the RFID reader. For example, the antenna identifier may be represented by a value of 1 to 16 (1-16).

The UII header length is information for indicating the length of the UII header. The UII header length may represent a byte value in hexadecimal format. For example, the length of the UII header may be represented by a value of 0 to 255 (0-255). At this time, if the value of the UII header length is 0, it indicates that the UII set does not include the UII header.

The UII header is information for indicating additional information about the UII. The UII header is, for example, an RFID tag compliant with the International Organization for Standardization / International Electrotechnical Commission (hereinafter referred to as ISO / IEC) 18000-6 Type C standard. If recognized, it indicates protocol control (PC) information.

The UII length is information for indicating the length of the UII. The UII length may represent a byte value in hexadecimal format. The UII length may have a value of 0 to 255 (0-255).

The UII is identifier information for uniquely identifying the thing or service to which the RFID tag is attached.

1. Read command message and read response message

9A illustrates a read command message according to an embodiment of the present invention.

Referring to FIG. 9A, a read command message includes a message length, a message identifier, a message code, an operation code, and a payload. For example, the message length may represent a value in two bytes, the message identifier may represent a value in two bytes, the work code may represent a value in one byte, and the payload may have a variable length.

The read command message is a command message for reading data of a specific area from the RFID tag memory.

The message length is information indicating the length of the entire read command message. The message length can be expressed in two-byte hexadecimal format.

The message identifier is identifier information for identifying a read command message. The message identifier is a natural value of one or more. For example, if the message identifier is 1, this value is expressed as '0x0001' when expressed in 2-byte hexadecimal format.

The job code is information indicating a read operation. The working code indicates ASCII code value corresponding to 'R', which is short for Read, that is, '0x52'.

The payload includes a UII Length, a UII, a Memory Bank, a Data Pointer, a Data Length, a Password Length, and a Password. For example, the UII length can represent a value in one byte, the UII can represent a value in various bytes (0-n), the memory bank can represent a value in one byte, and the data pointer can represent a value in two bytes. The data length can represent a value in two bytes, the password length can represent a value in one byte, and the password can represent a value in various bytes (0-n).

The UII length is information for indicating the length of the UII. The UII length may represent a byte value in hexadecimal format. The UII length may have a value of 0 to 255 (0-255).

The UII is identifier information for uniquely identifying the thing or service to which the RFID tag is attached.

The memory bank is information representing a logical block of the RFID tag memory. The memory bank may be represented by a value of 0 to 255 (0-225). For example, in the case of an RFID tag that is compatible with ISO / IEC 18000-6 Type C standard, the memory bank may represent a value of 0 to 3 (0-3). In addition, in the case of an RFID tag that is compatible with ISO / IEC 18000-6 type B, the memory bank may indicate a value of zero.

The data pointer is pointer information indicating a starting point of a specific area of the RFID tag memory. For example, the data pointer is information representing a position value in bytes from the start point of the memory bank.

The data length is information for indicating the length of the data. The data length is information for identifying a specific area of the RFID tag memory. The data length represents the length of data in bytes unit, which refers to (start) the data pointer in the RFID tag memory. For example, in the payload of a read command message for reading data written from the second byte to the fourth byte of memory bank 3, the memory bank is '0x03', the data pointer is '0x0002', and the data length is '0x0002'. Represented by

The password length is information for indicating the length of the password required to perform the read command. For example, the password length may be represented by a value of 0 to 255 (0-225).

The password is information representing an encryption string necessary for reading data of a specific area from the memory of the RFID tag.

9B illustrates a read response message according to an embodiment of the present invention.

Referring to FIG. 9B, the read response message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload. For example, the message length can represent a value in two bytes, the message identifier can represent a value in two bytes, the work code can represent a value in one byte, and the response code can represent a value in one byte. The payload may have a variable length.

The read response message is a response message according to an operation performed corresponding to the read command message. The read response message is a message for transmitting data read from the RFID tag to the host by the RFID reader.

The message length is information indicating the length of the entire read response message. The message length may represent a byte value in hexadecimal format.

The message identifier is identifier information for identifying a read response message. The message identifier is a natural value of 1 or more and can be expressed in two-byte hexadecimal format. For example, the message identifier of the read response message may be represented by the same value as the message identifier of the read command message.

The job code is information for indicating that the RFID code is a control message for a read operation. The work code may be represented by an ASCII code value '0x52' corresponding to 'R' which is an abbreviation of Read, that is, Read.

The response code is information indicating an operation result according to a read operation request of a read command message.

In addition, the payload includes a data length and data. For example, the data length may represent a value in two bytes, and the data may represent a value in various bytes (0-n) according to information included.

The data length is information indicating the length of data read from the RFID tag.

The data is information representing data read from the RFID tag through a read command message.

2. Write command message and write response message

10A illustrates a write command message according to an embodiment of the present invention.

Referring to FIG. 10A, a write command message includes a message length, a message identifier, a message code, an operation code, and a payload. For example, the message length may represent a value in two bytes, the message identifier may represent a value in two bytes, the work code may represent a value in one byte, and the payload may have a variable length.

The write command message is a command message for writing data to a specific area of the RFID tag memory.

The message length is information indicating the length of the entire write command message. The message length can be expressed in two-byte hexadecimal format.

The message identifier is identifier information for identifying a write command message. The message identifier is a natural value of one or more. For example, if the message identifier is 1, this value is expressed as '0x0001' when expressed in 2-byte hexadecimal format.

The job code is information indicating a write operation. The working code represents ASCII code value corresponding to 'W', which is an abbreviation of 'Write', 'Write'.

The payload is UII Length, UII, Memory Bank, Data Pointer, Data Length, Data, Password Length, and Password. It includes. For example, the UII length can represent a value in one byte, the UII can represent a value in various bytes (0-n), the memory bank can represent a value in one byte, and the data pointer can represent a value in two bytes. The data length can represent a value in two bytes, the data can represent a value in various bytes (0-n), the password length can represent a value in one byte, and the password can represent a variety of bytes ( 0-n) can represent a value.

The UII length is information for indicating the length of the UII. The UII length may represent a byte value in hexadecimal format. The UII length may be represented by a value of 0 to 255 (0-255).

The UII is identifier information for uniquely identifying a thing or service to which an RFID tag is attached. The UII may be represented by a byte array.

The memory bank is information representing a logical block of the RFID tag memory. The memory bank may be represented by a value of 0 to 255 (0-225). For example, in the case of an RFID tag that is compatible with ISO / IEC 18000-6 Type C standard, the memory bank may represent a value of 0 to 3 (0-3). In addition, in the case of an RFID tag that is compatible with ISO / IEC 18000-6 type B, the memory bank may indicate a value of zero.

The data pointer is pointer information indicating a starting point of a specific area of the RFID tag memory. For example, the data pointer is information representing a position value in bytes from the start point of the memory bank.

The data length is information for indicating the length of the data. The data length is information for identifying a specific area of the RFID tag memory. The data length represents the length of data in bytes unit, which refers to (start) the data pointer in the RFID tag memory.

The password length is information for indicating the length of the password required to perform the write command. For example, the password length may be represented by a value of 0 to 255 (0-225).

The password is information representing an encryption string necessary for writing data to a specific area of the RFID tag memory.

10B illustrates a write response message according to an embodiment of the present invention.

Referring to FIG. 10B, the write response message includes a message length, a message identifier, a message code, an operation code, and a response code. For example, the message length may represent a value in two bytes, the message identifier may represent a value in two bytes, the work code may represent a value in one byte, and the response code may represent a value in one byte. .

The write response message is a response message according to an operation performed corresponding to the write command message. The write response message is a message for transmitting a write performing operation result of the RFID tag in the RFID reader.

The message length is information indicating the length of the entire write response message. The message length may represent a byte value in hexadecimal format.

The message identifier is identifier information for identifying the write response message. The message identifier is a natural value of 1 or more and can be expressed in two-byte hexadecimal format. For example, the message identifier of the write response message may be represented by the same value as the message identifier of the write command message.

The work code is information for indicating that the RFID code is a control message for a write operation. The work code may be represented by an ASCII code value '0x57' corresponding to 'W', which is an abbreviation of 'Write'.

The response code is information indicating an operation result according to a write operation request of a write command message.

3. Disable Command Message and Disable Response Message

11A illustrates a disable command message according to an embodiment of the present invention.

Referring to FIG. 11A, the disable command message includes a message length, a message identifier, a message code, an operation code, and a payload. For example, the message length may represent a value in two bytes, the message identifier may represent a value in two bytes, the work code may represent a value in one byte, and the payload may have a variable length.

The disable command message is a command message for disabling data collection of the RFID tag memory.

The message length is information indicating the length of the entire dead message. The message length can be expressed in two-byte hexadecimal format.

The message identifier is identifier information for identifying an invalid command message. The message identifier is a natural value of one or more. For example, if the message identifier is 1, this value is expressed as '0x0001' when expressed in 2-byte hexadecimal format.

The job code is information indicating the disabled operation. The working code represents ASCII code value corresponding to 'K' which is the abbreviation of 'Kill' or 'Kill' in hexadecimal format and is represented as '0x4B'.

The payload includes a UII Length, a UII, a Password Length, and a Password. For example, UII length can represent a value in one byte, UII can represent a value in various bytes (0-n), password length can represent a value in one byte, and password can represent a variety of bytes (0-). The value can be expressed in n).

The UII length is information for indicating the length of the UII. The UII length may represent a byte value in hexadecimal format. The UII length may be represented by a value of 0 to 255 (0-255).

The UII is identifier information for uniquely identifying a thing or service to which an RFID tag is attached. The UII may be represented by a byte array.

The password length is information for indicating the length of the password required for performing the disable command. For example, the password length may be represented by a value of 0 to 255 (0-225).

The password is information representing an encryption string necessary to disable data collection of the RFID tag memory.

11B is a diagram illustrating an disable response message according to an embodiment of the present invention.

Referring to FIG. 11B, the disabling response message includes a message length, a message identifier, a message ID, an operation code, and a response code. For example, the message length may represent a value in two bytes, the message identifier may represent a value in two bytes, the work code may represent a value in one byte, and the response code may represent a value in one byte. .

The disable response message is a response message according to performing an operation corresponding to the disable command message. The disable response message is a message for transmitting a control result of the functional stop of the RFID tag from the RFID reader to the host.

The message length is information indicating the length of the entire dead response message. The message length may represent a byte value in hexadecimal format.

The message identifier is identifier information for distinguishing an invalid response message. The message identifier is a natural value of 1 or more and can be expressed in two-byte hexadecimal format. For example, the message identifier of the disable response message may be represented by the same value as the message identifier of the disable command message.

The work code is information for indicating that the RFID code is a control message for a kill operation in the RFID reader. The work code may be represented by ASCII code value '0x4B' corresponding to 'K', which is an abbreviation of 'Kill'.

The response code is information indicating an operation result according to the disable operation request of the disable command message.

4. Lock Command Message and Lock Response Message

12A illustrates a lock command message according to an embodiment of the present invention.

Referring to FIG. 12A, the lock command message includes a message length, a message identifier, a message code, an operation code, and a payload. For example, the message length may represent a value in two bytes, the message identifier may represent a value in two bytes, the work code may represent a value in one byte, and the payload may have a variable length.

The lock command message is a command message for locking (setting whether or not changeable) of specific area data is performed from the RFID tag memory.

The message length is information indicating the length of the entire lock command message. The message length can be expressed in two-byte hexadecimal format.

The message identifier is identifier information for identifying the lock command message. The message identifier is a natural value of one or more. For example, if the message identifier is 1, this value is expressed as '0x0001' when expressed in 2-byte hexadecimal format.

The job code is information indicating the lock operation. The working code is represented by '0x4C' when the ASCII code value corresponding to 'L', which is an abbreviation of Lock, or 'Lcok' is expressed in hexadecimal format.

The payload includes a UII Length, a UII, a Lock Payload Length, a Lock Payload, a Password Length, and a Password. For example, the UII length may represent a value in one byte, the UII may represent a value in various bytes (0-n), the lock payload length may represent a value in one byte, and the lock payload may vary. The value can be expressed in bytes (1-n), the password length can represent the value in one byte, and the password can represent the value in various bytes (0-n).

The UII length is information for indicating the length of the UII. The UII length may represent a byte value in hexadecimal format. The UII length may be represented by a value of 0 to 255 (0-255).

The UII is identifier information for uniquely identifying a thing or service to which an RFID tag is attached.

The lock payload length is information for indicating the length of the lock payload. The lock payload length may be represented by a value of 0 to 255 (0-255).

The lock payload is a value for setting whether to access a specific area of the RFID tag memory.

The password length is information for indicating the length of the password required for performing the lock command. For example, the password length may be represented by a value of 0 to 255 (0-225).

The password is information representing a password string necessary for setting access of data in a specific area from the memory of the RFID tag.

12B illustrates a lock response message according to an embodiment of the present invention.

Referring to FIG. 12B, the lock response message includes a message length, a message identifier, a message code, an operation code, and a response code. For example, the message length may represent a value in two bytes, the message identifier may represent a value in two bytes, the work code may represent a value in one byte, and the response code may represent a value in one byte. .

The lock response message is a response message according to performing an operation corresponding to the lock command message. The lock response message is a message for transmitting an access setting result of specific area data of the RFID tag memory to the host by the RFID reader.

The message length is information indicating the length of the entire lock response message. The message length may represent a byte value in hexadecimal format.

The message identifier is identifier information for identifying the lock response message. The message identifier is a natural value of 1 or more and can be expressed in two-byte hexadecimal format. For example, the message identifier of the lock response message may be represented by the same value as the message identifier of the lock command message.

The work code is information for indicating that the RFID code is a control message for a lock operation. The work code may be represented by an ASCII code value '0x4C' corresponding to 'L' which is an abbreviation of lock, that is, lock.

The response code is information indicating an operation result according to the lock operation request of the lock command message.

5. Inquiry command message, setup command message, extended command message, inquiry response message, setup response message, and extended response message

13A illustrates an inquiry command message, a setting command message, and an extension command message according to an embodiment of the present invention.

Referring to FIG. 13A, an inquiry command message, a setting command message, and an extension message include a message length, a message identifier, a message ID, an operation code, and a payload. For example, the message length may represent a value in two bytes, the message identifier may represent a value in two bytes, the work code may represent a value in one byte, and the payload may have a variable length.

The inquiry command message is a command message for inquiring the set value of the RFID reader for controlling the RFID tag memory in the host. The setting command message is a command message for setting the setting value of the RFID reader for controlling the RFID tag memory in the host. The extended message is a command message that can be extended according to the characteristics (manufacturer, type, etc.) of the RFID reader.

Therefore, the command message shown in FIG. 13A may be used as one command message among an inquiry command message, a setting command message, and an extended command message.

The message length is information indicating the length of one command message of the full inquiry command message, the full set command message, and the full extension command message. The message length can be expressed in two-byte hexadecimal format.

The message identifier is identifier information for identifying one of the inquiry command message, the setting command message, and the extension command message. The message identifier is a natural value of one or more. For example, if the message identifier is 1, this value is expressed as '0x0001' when expressed in 2-byte hexadecimal format.

The job code is information indicating one of an inquiry operation, a setting operation, and an extension operation. In the case of the inquiry command message, the ASCII code value corresponding to 'G' which is an abbreviation of 'Get', that is, 'Get', is expressed as '0x47'. When the operation code is a set command message, the ASCII code value corresponding to Set, that is, an abbreviation of 'S', is expressed as '0x53' in hexadecimal format. The work code indicates that the ASCII code value corresponding to the extension (Custom), that is, the abbreviation 'C' in the case of the extended command message, is expressed as '0x43' in hexadecimal format.

The payload may include various parameters according to the type of command message, and the password may represent a value in various bytes (0-n).

13B illustrates an inquiry response message, a setting response message, and an extended response message according to an embodiment of the present invention.

Referring to FIG. 13B, the inquiry response message, the setting response message, and the extended response message may include a message length, a message identifier, a message ID, an operation code, a response code, and a payload. Include Payload. For example, the message length can represent a value in two bytes, the message identifier can represent a value in two bytes, the work code can represent a value in one byte, and the response code can represent a value in one byte. The payload may represent a value in various bytes (0-n).

The inquiry response message is a response message according to an operation performed corresponding to the inquiry command message. The inquiry response message is a message for transmitting a setting value for controlling the RFID tag set in the RFID reader to the host.

The setting response message is a response message according to performing an operation corresponding to the setting command message. The setting response message is a message for transmitting the setting result of the setting value for controlling the RFID tag to the host.

The extended response message is a response message according to performing an operation corresponding to the extended command message. The extension response message is a message for transmitting information on whether the extension is possible to the host according to the characteristics of the RFID reader.

Therefore, the response message shown in FIG. 13B may be used as one response message among the inquiry response message, the setting response message, and the extended response message.

The message length is information indicating the length of one response message among the entire inquiry response message, the global setup response message, and the overall extended response message. The message length can be expressed in two-byte hexadecimal format.

The message identifier is identifier information for distinguishing one response message from the inquiry response message, the configuration response message, and the extended response message. The message identifier is a natural value of one or more. For example, if the message identifier is 1, this value is expressed as '0x0001' when expressed in 2-byte hexadecimal format. The message identifier may be represented by the same value as the identifier of one command message corresponding to the inquiry command message, the setting command message, and the extended command message.

The job code is information indicating one of an inquiry operation, a setting operation, and an extension operation. In the case of the inquiry response message, the work code indicates that the ASCII code value corresponding to 'G', which is an abbreviation of 'Get', is expressed as '0x47'. In the case of the set response message, the work code indicates that the ASCII code value corresponding to Set, that is, the abbreviation 'S' in the hexadecimal format is expressed as '0x53'. In case of the extended response message, the ASCII code value corresponding to 'C', which is an abbreviation of 'Custom', that is, 'Custom', is expressed as '0x43'.

The response code is information indicating an operation result according to the inquiry operation request of the inquiry command message in the case of the inquiry response message, information indicating an operation result according to the setting operation request of the setting command message in the case of the setting response message, and extension response message. Includes one piece of information indicating a result of the extension operation corresponding to the extension command message.

The payload may include various parameters according to the type of response message, and the password may express a value in various bytes (0-n).

13C illustrates a payload of an inquiry message or a configuration message according to an embodiment of the present invention.

Referring to FIG. 13C, the payload includes a config type and a config value. For example, the configuration type may represent a value in two bytes, and the configuration value may represent a value in various bytes (0-n). Here, the payload is included in an inquiry message (query command message or inquiry response message) and a setting message (setting command message or setting response message).

The values that the setting type can have are shown in Table 3 below.

Config Type division Explanation 0x01 Antenna Activation Supports a total of 16 antennas to activate or deactivate specific antennas 0x02 Notification Message Activation Command for activating notification message generation from RFID reader device 0x03 Notification Data Setting Command to set UII and memory area of RFID tag to be collected through notification message from RFID reader 0x04 Tx Power Control Command to adjust antenna output of RFID reader device 0x05 Inventory_Q Command to adjust the parameters required for the passive UHF RFID reader to identify multiple RFID tags 0x06 Window size Command to adjust the parameters required for the active RFID reader to identify multiple RFID tags

Referring to Table 3, the setting type is, for example, a hexadecimal value for an ASCII code as one byte, similar to a method for representing a work code. Setting types are, for example, antenna activation, notification message activation, notification data setting, transmit power control, inventory_q, inventory_q, and window size. It includes (Window Size).

Antenna Activation is ASCII code value '0x01'. Antenna Activation is information included in the payload to activate or deactivate a specific antenna. For example, the antenna activation message may support 16 antennas.

Notification Message Activation is an ASCII code value of '0x02'. Notification Message Activation is information included in the payload to activate notification message generation from the RFID reader.

Notification Data Setting is ASCII code value '0x03'. Notification Data Setting is information included in the payload to set the UII and memory area of the RFID tag to be collected from the notification message to the RFID reader.

Tx Power Control is ASCII code value '0x04'. Tx power control is information included in the payload to adjust the antenna output of the RFID reader.

Inventory_Q is an ASCII code value of '0x05'. Inventory_Q is information included in the payload to adjust the parameters necessary for the RFID reader to identify a plurality of RFID tags. The RFID reader may be, for example, a passive ultra high frequency (UHF) RFID reader.

Window Size is ASCII code '0x06'. Window Size is information included in the payload to adjust the parameters needed for the RFID reader to identify multiple RFID tags. The RFID reader may be, for example, an active RFID reader.

In addition, the configuration value may be determined according to a setting type, and a data type or a range of values may be determined.

The inquiry message (query command message or inquiry response message) or setting message (setting command message or setting response message) described in FIGS. 13A to 13C will be described with reference to FIGS. 14A to 19D below based on the setting type of Table 3.

1) Inquiry message and setting message for activating the antenna

14A illustrates an inquiry command message for activating an antenna according to an embodiment of the present invention.

Referring to FIG. 14A, the inquiry command message includes a message length, a message identifier, a message ID, an operation code, and a payload. For example, the message length may represent a value in two bytes, the message identifier may represent a value in two bytes, and the work code may represent a value in one byte.

The inquiry command message is a command message transmitted from the host to the RFID reader to obtain the antenna activation state of the RFID reader.

The message length is information indicating the length of the entire inquiry command message. The message length expresses the length of the entire response message as a natural number in bytes.

The message identifier is identifier information for identifying the inquiry command message. The message identifier is a natural value of one or more. For example, if the message identifier is 1, this value is expressed as '0x0001' when expressed in 2-byte hexadecimal format.

The job code is information indicating an inquiry operation. The work code is expressed as '0x47' when ASCII code value corresponding to 'G', which is an abbreviation of 'Get', is expressed in hexadecimal format.

The payload may include a configuration type for obtaining an antenna activation state. For example, the setting type may represent a value in one byte.

The configuration type may indicate '0x01' corresponding to antenna activation.

14B illustrates an inquiry response message for activating an antenna according to an embodiment of the present invention.

Referring to FIG. 14B, the inquiry response message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload. For example, the message length can represent a value in two bytes, the message identifier can represent a value in two bytes, the work code can represent a value in one byte, and the response code can represent a value in one byte. The payload may have a variable length.

The inquiry response message is a response message according to an operation performed corresponding to the inquiry command message. The inquiry response message is a message for providing the antenna activation state of the RFID reader to the host in the RFID reader.

The message length is information indicating the length of the entire inquiry response message. The message length may represent a byte value in hexadecimal format.

The message identifier is identifier information for identifying the inquiry response message. The message identifier is a natural value of 1 or more and can be expressed in two-byte hexadecimal format. For example, the message identifier of the inquiry response message may be represented by the same value as the message identifier of the inquiry command message.

The job code is information for indicating that the RFID code is a control message for a Get operation. The work code is expressed as '0x47' when ASCII code value corresponding to 'G', which is an abbreviation of 'Get', is expressed in hexadecimal format.

The response code is information indicating an operation result according to the inquiry operation request of the inquiry command message.

The payload includes a configuration type and an antenna index. For example, the configuration type may represent a value in 1 byte, and the antenna index may represent a value in 2 bytes.

The configuration type may indicate '0x01' corresponding to antenna activation.

As an example, the antenna index indicates whether to activate 16 antennas. For example, when the antenna index has a value of '0x0000', all antennas are deactivated. When the antenna index has a value of '0x0001', the first (number 1) antenna is activated, and the antenna index is' In the case of 0xFFFF ', all 16 antennas are activated.

14c illustrates a configuration command message for activating an antenna according to an embodiment of the present invention.

Referring to FIG. 14C, the setup command message includes a message length, a message identifier, a message code, an operation code, and a payload. For example, the message length may represent a value in two bytes, the message identifier may represent a value in two bytes, and the work code may represent a value in one byte.

The setting command message is a message for setting the antenna activation state of the RFID reader.

The message length is information indicating the length of the entire setup command message. The message length can be represented by an ASCII code.

The message identifier is identifier information for identifying a setting command message. The message identifier is a natural value of 1 or more and can be expressed in two-byte hexadecimal format.

The job code is information indicating an inquiry operation. The work code may be represented as a set, that is, an ASCII code value '0x53' corresponding to 'S', which is an abbreviation of Set.

The payload may include a configuration type for obtaining the antenna activation state and an antenna index. For example, the configuration type may represent a value in 1 byte, and the antenna index may represent a value in 2 bytes.

The configuration type may indicate '0x01' corresponding to antenna activation. As an example, the antenna index indicates whether to activate 16 antennas.

14d illustrates a configuration response message for activating an antenna according to an embodiment of the present invention.

Referring to FIG. 14D, the configuration response message includes a message length, a message identifier, a message ID, an operation code, and a payload. For example, the message length may represent a value in two bytes, the message identifier may represent a value in two bytes, and the work code may represent a value in one byte.

The setup response message is a response message according to an operation performed corresponding to the setup response message. The configuration response message is a message for providing the antenna activation setting state of the RFID reader to the host in the RFID reader.

The message length is information indicating the length of the entire setup response message. The message length may represent a byte value in hexadecimal format.

The message identifier is identifier information for identifying the setting response message. The message identifier is a natural value of 1 or more and can be expressed in two-byte hexadecimal format. For example, the message identifier of the setup response message may be represented by the same value as the message identifier of the setup command message.

The job code is information indicating an inquiry operation. The work code may be represented as a set, that is, an ASCII code value '0x53' corresponding to 'S', which is an abbreviation of Set.

The payload may include a configuration type for obtaining an antenna activation state. For example, the setting type may represent a value in one byte.

The configuration type may indicate '0x01' corresponding to antenna activation.

2) Inquiry message and setting message to activate notification message

15A illustrates an inquiry command message for activating a notification message according to an embodiment of the present invention.

Referring to FIG. 15A, the inquiry command message includes a message length, a message identifier, a message code, an operation code, and a payload.

The inquiry command message has a structure similar to the inquiry command message of FIG. 14A. Therefore, the configuration of the inquiry command message will be referred to FIG. 14A.

The inquiry command message is a command message sent from the host to the RFID reader to query the activation of the notification message of the RFID reader.

The payload may include a configuration type for obtaining an activation state of notification message generation. For example, the setting type may represent a value in one byte.

The setting type may indicate '0x02' corresponding to the notification message activation.

15B illustrates a structure of an inquiry response message for indicating activation of a notification message according to an embodiment of the present invention.

Referring to FIG. 15B, the inquiry response message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload.

The inquiry response message has a structure similar to the inquiry response message of FIG. 14B. Therefore, the configuration of the inquiry response message will be referred to FIG. 14B.

The inquiry response message is a response message according to an operation performed corresponding to the inquiry command message. The inquiry response message is a message for providing the host with a notification message activation state of the RFID reader in the RFID reader.

The payload includes a configuration type and an activation flag. For example, the setting type may represent a value in one byte, and the activation flag may represent a value in one byte.

The setting type may indicate '0x02' corresponding to the notification message activation.

The activation flag indicates whether the notification message of the RFID reader is activated. If the activation flag indicates that the notification message is activated, the activation flag may further include information about a generation period of the notification message in the payload.

The payload further includes a period if the activation flag indicates activation of the notification message. The period can represent a value in two bytes.

The period indicates the generation period of the notification message. For example, an RFID reader that is compatible with ISO / IEC 18000-6 type C may include a value in milliseconds. If the value corresponding to the period is 5 seconds, the RFID reader may generate a notification message every 5 seconds and transmit it to the host.

15C is a diagram illustrating a setup command message for activating a notification message according to an embodiment of the present invention.

Referring to FIG. 15C, the configuration command message includes a message length, a message identifier, a message code, an operation code, and a payload.

The setting command message has a structure similar to the setting command message of FIG. 14C. Therefore, the configuration of the setting command message will be referred to FIG. 14C.

The configuration command message is a command message sent from the host to the RFID reader to set activation of a notification message of the RFID reader.

The payload may include a configuration type and an activation flag for setting an activation state of notification message generation. For example, the setting type may represent a value in one byte, and the activation flag may represent a value in one byte.

The setting type may indicate '0x02' corresponding to the notification message activation.

The activation flag indicates whether the notification message of the RFID reader is activated. If the activation flag indicates that the notification message is activated, the activation flag may further include information about a generation period of the notification message in the payload.

The payload further includes a period if the activation flag indicates activation of the notification message. The period can represent a value in two bytes.

The period indicates the generation period of the notification message. For example, an RFID reader that is compatible with ISO / IEC 18000-6 type C may include a value in milliseconds.

15D is a diagram illustrating a structure of a configuration response message for indicating activation of a notification message according to an embodiment of the present invention.

Referring to FIG. 15D, the configuration response message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload.

The setup response message has a structure similar to the setup response message of FIG. 14D. Therefore, the configuration of the configuration response message will be referred to FIG. 14D.

The setting response message is a response message according to performing an operation corresponding to the setting command message. The configuration response message is a message for providing a notification message setting result of the RFID reader to the host in the RFID reader.

The payload includes a config type. For example, the setting type may represent a value in one byte.

The setting type may indicate '0x02' corresponding to the notification message activation.

3) Inquiry message and setting message for setting notification data

16A illustrates an inquiry command message for setting notification data according to an embodiment of the present invention.

Referring to FIG. 16A, the inquiry command message includes a message length, a message identifier, a message code, an operation code, and a payload.

The inquiry command message has a structure similar to the inquiry command message of FIG. 14A. Therefore, the configuration of the inquiry command message will be referred to FIG. 14A.

The inquiry command message is a command message transmitted from the host to the RFID reader to inquire information (eg, UII of the RFID tag or memory area of the RFID tag) about data to be collected through the notification message of the RFID reader.

The payload may include a configuration type and a transmission power (Tx Power). For example, the setting type may represent a value in one byte, and the transmission power may represent a value in two bytes.

The setting type may indicate '0x03' corresponding to the notification data setting.

16B illustrates an inquiry response message for setting notification data according to an embodiment of the present invention.

Referring to FIG. 16B, the inquiry response message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload.

The inquiry response message has a structure similar to the inquiry response message of FIG. 14B. Therefore, the configuration of the inquiry response message will be referred to FIG. 14B.

The inquiry response message is a response message according to an operation performed corresponding to the inquiry command message. The inquiry response message is a message for providing the host with a result of the inquiry about the information to be collected through the notification message of the RFID reader (for example, the UII of the RFID tag or the memory area of the RFID tag).

The payload includes a configuration type, a memory bank, a data pointer, a data length, a password length, and a password. For example, a configuration type may represent a value in one byte, a memory bank may represent a value in one byte, a data pointer may represent a value in two bytes, and a data length may represent a value in two bytes. Password length can represent a value in one byte, and password can represent a value in various bytes (0-n).

The setting type may indicate '0x03' corresponding to the notification data setting.

The memory bank is information representing a logical block of the RFID tag memory. The memory bank may be represented by a value of 0 to 255 (0-225). For example, in the case of an RFID tag that is compatible with ISO / IEC 18000-6 Type C, the memory bank may indicate a value of 0 to 3 (0-3). In addition, in the case of an RFID tag that is compatible with ISO / IEC 18000-6 type B, the memory bank may indicate a value of zero.

The data pointer is pointer information indicating a starting point of a specific area of the RFID tag memory. For example, the data pointer is information representing a position value in bytes from the start point of the memory bank.

The data length is information for indicating the length of the data. The data length is information for identifying a specific area of the RFID tag memory. The data length indicates the length of data in bytes based on the data pointer of the RFID tag memory.

The password length is information for indicating the length of the password required to perform the read command. For example, the password length may be represented by a value of 0 to 255 (0-225).

The password is information representing an encryption string necessary for reading data of a specific area from the memory of the RFID tag.

16C is a diagram illustrating a setting command message for setting notification data according to an embodiment of the present invention.

Referring to FIG. 16C, the setting command message includes a message length, a message identifier, a message code, an operation code, and a payload.

The setting command message has a structure similar to the setting command message of FIG. 14C. Therefore, the configuration of the setting command message will be referred to FIG. 14C.

The configuration command message is a command message transmitted from the host to the RFID reader to set information (eg, UII of the RFID tag or memory area of the RFID tag) about data to be collected through the notification message of the RFID reader.

The payload includes a configuration type, a memory bank, a data pointer, a data length, a password length, and a password. For example, a configuration type may represent a value in one byte, a memory bank may represent a value in one byte, a data pointer may represent a value in two bytes, and a data length may represent a value in two bytes. Password length can represent a value in one byte, and password can represent a value in various bytes (0-n).

The setting type may indicate '0x03' corresponding to the notification data setting.

The memory bank is information representing a logical block of the RFID tag memory. The memory bank may be represented by a value of 0 to 255 (0-225). For example, in the case of an RFID tag that is compatible with ISO / IEC 18000-6 Type C, the memory bank may indicate a value of 0 to 3 (0-3). In addition, in the case of an RFID tag that is compatible with ISO / IEC 18000-6 type B, the memory bank may indicate a value of zero.

The data pointer is pointer information indicating a starting point of a specific area of the RFID tag memory. For example, the data pointer is information representing a position value in bytes from the start point of the memory bank.

The data length is information for indicating the length of the data. The data length is information for identifying a specific area of the RFID tag memory. The data length indicates the length of data in bytes based on the data pointer of the RFID tag memory.

The password length is information for indicating the length of the password required to perform the read command. For example, the password length may be represented by a value of 0 to 255 (0-225).

The password is information representing an encryption string necessary for reading data of a specific area from the memory of the RFID tag.

16D illustrates a configuration response message for setting notification data according to an embodiment of the present invention.

Referring to FIG. 16D, the configuration response message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload.

The setup response message has a structure similar to the inquiry response message of FIG. 14D. Therefore, the configuration of the configuration response message will be referred to FIG. 14D.

The setting response message is a response message according to performing an operation corresponding to the setting command message. The configuration response message is a message for providing the host with a result of a configuration request for information (eg, UII of an RFID tag or a memory area of an RFID tag) about data to be collected through a notification message of an RFID reader.

The payload may include a configuration type for obtaining configuration information of the RFID reader for data to be collected through the notification message. For example, the setting type may represent a value in one byte.

The setting type may indicate '0x03' corresponding to the notification data setting.

4) Inquiry message and setting message for controlling antenna transmit power of RFID reader

17A illustrates an inquiry command message for controlling antenna transmission power of an RFID reader according to an embodiment of the present invention.

Referring to FIG. 17A, the inquiry command message includes a message length, a message identifier, a message code, an operation code, and a payload.

The inquiry command message has a structure similar to the inquiry command message of FIG. 14A. Therefore, the configuration of the inquiry command message will be referred to FIG. 14A.

The inquiry command message is a command message transmitted from the host to the RFID reader to inquire the antenna transmit power of the RFID reader.

The payload may include a config type. For example, the setting type may represent a value in one byte.

The setting type may indicate '0x04' corresponding to Tx Power Control.

17B illustrates an inquiry response message for controlling antenna transmission power of an RFID reader according to an embodiment of the present invention.

Referring to FIG. 17B, the inquiry response message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload.

It has a structure similar to the inquiry response message of FIG. 14B. Therefore, the configuration of the inquiry response message will be referred to FIG. 14B.

The inquiry response message is a response message according to an operation performed corresponding to the inquiry command message. The inquiry response message is a message for providing the host with the result of the antenna transmit power inquiry of the RFID reader.

The payload includes a configuration type and a transmit power (Tx Power). For example, the setting type may represent a value in one byte, and the transmission power may represent a value in two bytes.

The setting type may indicate '0x04' corresponding to Tx Power Control.

The transmit power includes information on the transmit power for the antenna of the RFID reader.

17C illustrates a configuration command message for controlling antenna transmission power of an RFID reader according to an embodiment of the present invention.

Referring to FIG. 17C, the configuration command message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload.

It has a structure similar to the setting command message of Fig. 14C. Therefore, the configuration of the setting command message will be referred to FIG. 14C.

The configuration command message is a command message transmitted from the host to the RFID reader to set the antenna transmission power of the RFID reader.

The payload includes a configuration type and a transmit power (Tx Power). For example, the setting type may represent a value in one byte, and the transmission power may represent a value in two bytes.

The setting type may indicate '0x04' corresponding to Tx Power Control.

The transmit power includes information on the transmit power for the antenna of the RFID reader.

17D is a diagram illustrating a structure of a configuration response message for controlling antenna transmission power of an RFID reader according to an embodiment of the present invention.

Referring to FIG. 17D, the configuration response message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload.

The setup response message has a structure similar to the setup response message of FIG. 14D. Therefore, the configuration of the configuration response message will be referred to FIG. 14D.

The setting response message is a response message according to performing an operation corresponding to the setting command message. The configuration response message is a message for providing the host with the result of the antenna transmission power setting of the RFID reader.

The payload may include a config type. For example, the setting type may represent a value in one byte.

The setting type may indicate '0x04' corresponding to Tx Power Control.

5) Inquiry command message and inquiry response message for RFID tag identification

FIG. 18A illustrates an Inventory_Q value inquiry command message of an RFID reader for identifying a plurality of RFID tags according to an embodiment of the present invention.

Referring to FIG. 18A, the inquiry command message includes a message length, a message identifier, a message code, an operation code, and a payload.

The inquiry command message has a structure similar to the inquiry command message of FIG. 14A. Therefore, the configuration of the inquiry command message will be referred to FIG. 14A.

The inquiry command message is a command message sent from the host to the RFID reader to identify a plurality of RFID tags.

The payload may include a config type. For example, the setting type may represent a value in one byte.

The configuration type may indicate '0x05' corresponding to inventory_Q.

18B is a view illustrating an inventory_Q (inquiry_Q) value inquiry response message of an RFID reader for identifying a plurality of RFID tags according to an embodiment of the present invention.

Referring to FIG. 18B, the inquiry response message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload.

It has a structure similar to the inquiry response message of FIG. 14B. Therefore, the configuration of the inquiry response message will be referred to FIG. 14B.

The inquiry response message is a response message according to an operation performed corresponding to the inquiry command message. The inquiry response message is a response message for providing the host with an inquiry result about Inventory_Q (Inventory_Q) information of an RFID reader for identifying a plurality of RFID tags.

The payload includes a configuration type and inventory_Q. For example, the configuration type may represent a value in one byte, and inventory_Q may represent a value in two bytes.

The configuration type may indicate '0x05' corresponding to inventory_Q.

The inventory_Q includes information on a value for setting the RFID reader for RFID tag identification.

FIG. 18C illustrates an inventory_Q (inventory_Q) value setting command message of an RFID reader for identifying a plurality of RFID tags according to an exemplary embodiment of the present invention.

Referring to FIG. 18C, the configuration command message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload.

The setting command message has a structure similar to the setting command message of FIG. 14C. Therefore, the configuration of the setting command message will be referred to FIG. 14C.

The setup command message is a command message sent to the RFID reader to set the inventory_Q for identifying a plurality of RFID tags.

The payload includes a configuration type and inventory_Q. For example, the configuration type may represent a value in one byte, and inventory_Q may represent a value in two bytes.

The configuration type may indicate '0x05' corresponding to inventory_Q.

The inventory Q includes information about values that can be set for RFID tag identification.

FIG. 18D is a diagram illustrating an inventory_Q (inventory_Q) value setting response message of an RFID reader for identifying a plurality of RFID tags according to an embodiment of the present invention.

Referring to FIG. 18D, the configuration response message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload.

The setup response message has a structure similar to the setup response message of FIG. 14D. Therefore, the configuration of the configuration response message will be referred to FIG. 14D.

The setting response message is a response message according to performing an operation corresponding to the setting command message. The configuration response message is a message for providing the host with the result of the inventory_Q configuration of the RFID reader.

The payload may include a config type. For example, the setting type may represent a value in one byte.

The configuration type may indicate '0x05' corresponding to inventory_Q.

6) Inquiry message and setting message for window size setting

19A illustrates an inquiry command message for setting a window size according to an embodiment of the present invention.

Referring to FIG. 19A, the inquiry command message includes a message length, a message identifier, a message code, an operation code, and a payload.

The inquiry command message has a structure similar to the inquiry command message of FIG. 14A. Therefore, the configuration of the inquiry command message will be referred to FIG. 14A.

The inquiry command message is a command message transmitted from the host to the RFID reader to obtain window size information of the RFID reader. Here, the window size represents a parameter for identifying the RFID tag within the recognition range of the RFID reader.

The payload may include a config type. For example, the setting type may represent a value in one byte.

The setting type may indicate '0x06' corresponding to the window size.

19B illustrates an inquiry response message for setting a window size according to an embodiment of the present invention.

Referring to FIG. 19B, the inquiry response message includes a message length, a message identifier, a message code, an operation code, a response code, and a payload.

The inquiry response message has a structure similar to the inquiry response message of FIG. 14B. Therefore, the configuration of the inquiry response message will be referred to FIG. 14B.

The inquiry response message is a response message according to an operation performed corresponding to the inquiry command message. The inquiry response message is a response message for providing the host with an inquiry result about the window size for identifying the RFID tag.

The payload includes a config type and a window size. For example, the configuration type may represent a value in 1 byte, and the window size may represent a value in 2 bytes.

The setting type may indicate '0x06' corresponding to the window size.

The window size includes information on the window size that can be set in the RFID reader for RFID tag identification.

19C illustrates a configuration command message for setting a window size according to an embodiment of the present invention.

Referring to FIG. 19C, the setup command message includes a message length, a message identifier, a message code, an operation code, and a payload.

The setting command message has a structure similar to the setting command message of FIG. 14C. Therefore, the configuration of the setting command message will be referred to FIG. 14C.

The configuration command message is a command message transmitted from the host to the RFID reader to set information for setting the window size of the RFID reader.

The payload includes a config type and a window size. For example, the configuration type may represent a value in 1 byte, and the window size may represent a value in 2 bytes.

The setting type may indicate '0x06' corresponding to the window size.

The window size includes information about a window size that can be set for RFID tag identification.

19D is a diagram illustrating a setting response message for setting a window size according to an embodiment of the present invention.

Referring to FIG. 19D, the configuration response message includes a message length, a message identifier, a message code, an operation code, and a payload.

The setup response message has a structure similar to the setup response message of FIG. 14D. Therefore, the configuration of the configuration response message will be referred to FIG. 14D.

The setting response message is a response message according to performing an operation corresponding to the setting command message. The configuration response message is a message for providing a result of the window size setting to the host.

The payload may include a config type. For example, the setting type may represent a value in one byte.

The setting type may indicate '0x06' corresponding to the window size.

20 illustrates a notification message according to an embodiment of the present invention.

Referring to FIG. 20, the notification message includes a message length, a message identifier, a message ID, an operation code, a response code, and a payload. For example, the message length can represent a value in two bytes, the message identifier can represent a value in two bytes, the work code can represent a value in one byte, and the response code can represent a value in one byte. The payload may have a variable length.

The notification message is a message transmitted from the RFID reader to the host.

The message length is information indicating the length of the entire notification message. The message length may represent a byte value in hexadecimal format.

The message identifier is identifier information for identifying the inquiry command message. In one example, the message identifier has a value of zero.

The job code is information indicating the notification operation. The work code may be represented by ASCII, which corresponds to ASCII, which corresponds to 'N', which is an abbreviation of Notification, that is, '0x4E'.

The response code may be one of the response codes shown in Table 2.

The payload includes a tag count and async data.

For example, the tag count may express a value in two bytes, and the asynchronous data may express a value in various bytes (0-n) according to information included.

The tag count refers to the total number of asynchronous data (Nx).

The asynchronous data includes an antenna ID, an UII header length, a UII header, a UII length, a UII, a data length, and data. For example, the antenna identifier may represent a value in one byte, the UII header length may represent a value in one byte, the UII header may represent a value in various bytes (0-n), and the UII length may be one byte. Can represent a value in, UII can represent a value in various bytes (0-n), data length can represent a value in two bytes, and data can represent a value in various bytes (0-n). .

The antenna identifier is identifier information of an antenna that recognizes an RFID tag. For example, the antenna identifier may be represented by a value of 1 to 16 (1-16).

The UII header length is information for indicating the length of the UII header. The UII header length may represent a byte value in hexadecimal format. For example, the length of the UII header may be represented by a value of 0 to 255 (0-255). If the UII header length is 0, this means that the UII header is not included.

The UII header is information for indicating additional information about the UII. For example, the UII header indicates protocol control (PC) information when an RFID tag compliant with the ISO / IEC 18000-6 Type C standard is recognized.

The UII length is information for indicating the length of the UII. The UII length may represent a byte value in hexadecimal format. The UII length may have a value of 0 to 255 (0-255).

The UII is identifier information for uniquely identifying the thing or service to which the RFID tag is attached.

The data length is information for indicating the length of the data. The data length represents the length in bytes of data read from the RFID tag.

The data represents the data read from the RFID tag.

FIG. 21 is a signal flowchart illustrating a procedure of transmitting and receiving an inquiry message and a setting message between a host and an RFID tag illustrated in FIG. 1.

Referring to FIG. 21, the host 100 transmits an inquiry command message to the RFID reader 200 (operation S211). The RFID reader 200 transmits an inquiry response message corresponding to the inquiry command message to the host 100 (step S213).

The host 100 transmits a configuration command message for activating an antenna to the RFID reader 200 (operation S215). The RFID reader 200 transmits a configuration response message for activating an antenna to the host 100 (operation S217).

The host 100 transmits a setting command message for antenna transmission power control to the RFID reader 200 (operation S219). The RFID reader 200 transmits a configuration response message for controlling antenna transmission power to the host 100 (step S221).

The host 100 transmits a setting command message for inventory to the RFID reader 200 (step S223). The RFID reader 200 transmits a configuration response message for inventory to the host 100 (step S225).

The host 100 transmits a setting command message for setting a notification message to the RFID reader 200 (step S227). The RFID reader 200 transmits a configuration response message for setting a notification message to the host 100 (step S229).

The host 100 transmits a setting command message for activating a notification message to the RFID reader 200 (step S231). The RFID reader 200 transmits a configuration response message for activating the notification message to the host 100 (step S233).

The RFID reader 200 transmits a notification message to the host 100 (step S235). If there is no procedure for transmitting / receiving the setting command message and the setting response message for setting the notification message, the notification message includes only the UII of the RFID tag connected to the RFID reader 200.

FIG. 22 is a signal flowchart illustrating a message transmission and reception procedure between an RFID reader and an RFID tag illustrated in FIG. 1.

Referring to FIG. 22, the RFID reader 200 transmits an inventory message to the RFID tag 300 (S310).

The RFID tag 300 transmits the UII of the RFID tag 300 to the RFID reader 200 (operation S320).

The RFID reader 200 requests reading of data stored in the memory of the RFID tag 300 (step S330).

The RFID tag 300 transmits data corresponding to the read request to the RFID reader 200 (operation S340).

As shown in FIG. 22, the RFID reader 200 may obtain UII or data from the RFID tag 300 to transmit a response message corresponding to the command message to the host 100.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the claims equivalent to the claims of the present invention as well as the claims of the following.

100: host
102: host transmitter
103: host receiving unit
110: host interface
111: memory
112: RFID reader connection
113: RFID reader control unit
200, 210, 220: RFID Reader
201: reader transmitter
202: reader receiver
300: RFID tag

Claims (1)

Transmitting a command message including a message length, a message identifier, and a work code to control the operation from a host to an RFID reader; And
Receiving a response message from the RFID reader, the response message including a message length, a message identifier, a work code, and a response code, in response to the command message;
And each of the command message and the response message selectively includes a payload according to a work code.

Images